Im offiziellen Forum von Bizarre hat "Ben" vom Bizarre Creation Entwicklungsteam verraten, dass man Probleme hat das komplexe Project Gotham Racing 4 auf eine DVD-Disk zu quetschen. In diesem Zusammenhang ist er besonders die Funktion der verschiedenen Tageszeiten eingegangen, über das PGR4 verfügt.
You won't see different times of day per city because this involves recreating all the textures again (one for day and one for night). Whilst this wasn't a problem for our dev team, it was a problem fitting all this data onto a single DVD. So we've worked around the problem by providing different lighting models per city. For example, Macau is always in the daytime, but if you play it during a storm everything looks darker and more foreboding. If you play during a blizzard then things are slightly tinged blue and everything seems more frozen. Of course, playing this track in sunshine will make everything appear bright and yellowy.